In order to avoid interference from other wireless devices. this items is designed with 25 selectable frequencies, when the microphone is powered on, just press the " One Key Auto Pairing"to change the frequency, the receiver will pair with transmitter frequency automatically.

If the AF/RF on receiver is lighted, that means they are paired and ready to use.

There are battery indicators on both mic and transmitter, please change battery for mic when battery is low or charge receiver with the USB cable included .(Handhel mic works up to 8 hours and receiver lasts for 6 hours when fully charged by 1 hour.

In order to enjoy better transmission, please don' t fold or cut the antenna on the receiver.

If you will not use the item in a short time, please take out the battery from the handheld mic.x If any problem caused, please don' t dissemble the item by yourself.please turn to the local distributor for help.